Airtel — Sim card blocked [protected]

Dear sir/madam,
my sim card blocked or rejected by the company, after two or three time visit at local delaer and show room i came to know that my sim card been blocked by bharathi airtel ltd, without any prior information to me, As every one knows today business totally is on mobile based, and today i am without netrwok, my complte business is based on mobile, now after two three hours fight with shoroom, they said kinldy sumbit all your valid proof to compantyy, they will investigation and will cativate, it will take 3-5 working day, i am lossed much